有时再用反射的时候，需要将反射出的方法注册给某个事件，这是就需要将改方法转化为delegate后才能绑定到对应的事件上
可以通过Delegate.CreateDelegate的方法来实现，如下：
/// <summary> /// 生成反射过来的MethodInfo到指定类型的委托 /// </summary> /// <typeparam name="T">EventArgs泛型类型</typeparam> /// <param name="instance">当前对象</param> /// <param name="method">需要转化为delegate的方法</param> /// <returns></returns> public static Delegate CreateDelegateFromMethodInfo<T>(Object instance,MethodInfo method) where T:EventArgs//约束泛型T只能是来自EventArgs类型的 { Delegate del = Delegate.CreateDelegate(typeof(EventHandler<T>), instance, method); EventHandler<T> mymethod = del as EventHandler<T>; return mymethod; } /// <summary> /// 生成反射过来的MethodInfo到指定类型的委托 /// </summary> /// <typeparam name="T">EventHandle泛型类型</typeparam> /// <param name="instance">当前对象</param> /// <param name="method">需要转化为delegate的方法</param> /// <returns></returns> public static Delegate CreateDelegateFromMethodInfoByDelegate<T>(Object instance, MethodInfo method) { Delegate del = Delegate.CreateDelegate(typeof(T), instance, method); EventHandler mymethod = del as EventHandler; return mymethod; }
private void button3_Click(object sender, EventArgs e) { var Instance = Activator.CreateInstance(typeof(Form1)) as Form1; MethodInfo methodInfo = typeof(Form1).GetMethod("Method1"); EventHandler dd = Delegate.CreateDelegate(typeof(EventHandler), Instance,methodInfo) as EventHandler; dd(null, null); } public void Method1(object sender, EventArgs e) { MessageBox.Show("ee"); }
